National gene conservation unit number: Le Val d'Allier
Date of collection of the field data entered: 2000
Date of the most recent visit: 2020

Location

Unit country: France
Unit province or state: AUVERGNE-RHONE-ALPES
Unit department or county: ALLIER
Unit municipality: BESSAY-SUR-ALLIER
Unit local name: R.N. du Val d'Allier
Ownership of the unit: Public
Unit elevation [m a.s.l.]: 215 - 215
Unit surface area [ha]: 700
Coordinates (Public coordinates): Latitude (Decimal):46.4361 | Longitude (Decimal): 3.3328

Soil: Eutric Fluvisols

Climate

Mean monthly temperature and mean monthly precipitation²

Climatic zone: Cool temperate.
Environmental zone:Cool temperate and moist.
Aridity index: 0.906

Species

All tree species reported in the unit: Salix alba; Ulmus laevis; Populus nigra
Target species for conservation in the GCU: Populus nigra, Ulmus laevis

Unit type: Biodiversity conservation (habitats AND/or species)

Target species: Populus nigra
Status of the target species in the GCU: Pending
Category of the target species in the GCU: In situ
Origin of the target species in the GCU : Autochtonous
Population share (%): 29%
Estimated number of reproducing trees (interval): 500 - 4999
Status of long-term viable regeneration: Continuous

Management
Population management: Minimum intervention allowed
Predominant silvicultural system: No silviculture

Target species: Ulmus laevis
Status of the target species in the GCU: Included
Category of the target species in the GCU: In situ
Origin of the target species in the GCU : Autochtonous
Population share (%): 10%
Estimated number of reproducing trees (interval): 500 - 4999
Status of long-term viable regeneration: Sporadic

Management
Population management: Minimum intervention allowed
Predominant silvicultural system: No silviculture